<template>
  <div class="wrapper">
    <swiper :options="swiperOption" v-if="shoeSwiper">
      <!-- slides -->
      <swiper-slide v-for="item of swiperList" :key="item.id">
        <img class="swiper-img" :src="item.imgUrl" alt="">
      </swiper-slide>
      <!-- Optional controls -->
      <div class="swiper-pagination"  slot="pagination"></div>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeSwiper',
  props: {
    swiperList: {
      type: Array
    }
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        loop: true
      }
    }
  },
  computed: {
    shoeSwiper () {
      return this.swiperList.length
    }
  }
}
</script>

<style lang="stylus" scoped>
.wrapper >>> .swiper-pagination-bullet-active
  background #fff

.wrapper
  width 100%
  height 0
  overflow hidden
  padding-bottom: 31.25%
  background #eee
  // height 0 + padding-bottom: 31.25% = height 31.25vw

  .swiper-img
    width 100%
</style>
